New Member

[spunmonkey]

Happy Easter to everyone!! I am new to metering my water & have a question on ppm. The water out of my tap is 456. I have been giving my girls GH nutes & when I was flushing for the first time the reading was 190 or so. I dont understand.... can someone let me know whats going on....thanks guys....

 

[Rifleman]

Welcome to spunmonkey. I'm a hydro guy so I can't offer much other than make sure your ppm pen is calibrated and the batteries are good. Weak batteries can do some odd things in electronics. Good luck.

 

[Stinky Snid]

That's weird... Not sure how that works. But like rifleman said make sure to recalibrate it often.

Welcome to site, glad you came to join the family. I look forward to many more posts, hopefully not only about problems but great looking buds that are sure to come.

KiG cheers

 

[Heirloom]

Your media probably picked up calcium cations and more out of the water. Your run off indicates that a lot of ppm's of whatever is in your water stayed in the media.

"FLUSHING" is a misunderstood thing. ONLY salts and elements that are highly mobile in soil are going to 'flush', or even move a little. To really understand what's happening you need to read up on CEC, cations, anions and understand, or at least have a basic working knowledge of what happens in soil. Flowing water isn't going to break the electric bonds that hold, say, a calcium cation (Ca++) or a Potassium cation (K+ or K++) to a negatively charged soil/clay particle.

Other wise you'll be 'flushing' with 450ppm and get a run off of 190ppm and scratch your head wondering where the ppms are going.

Try with RO or distilled water, then see if you're getting anything out.

 

[spunmonkey]

Your media probably picked up calcium cations and more out of the water. Your run off indicates that a lot of ppm's of whatever is in your water stayed in the media.

"FLUSHING" is a misunderstood thing. ONLY salts and elements that are highly mobile in soil are going to 'flush', or even move a little. To really understand what's happening you need to read up on CEC, cations, anions and understand, or at least have a basic working knowledge of what happens in soil. Flowing water isn't going to break the electric bonds that hold, say, a calcium cation (Ca++) or a Potassium cation (K+ or K++) to a negatively charged soil/clay particle.

Other wise you'll be 'flushing' with 450ppm and get a run off of 190ppm and scratch your head wondering where the ppms are going.

Try with RO or distilled water, then see if you're getting anything out.

Thanks, I will try DW....